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1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteNo cat food has been shown by the sources reviewed to cure or reliably treat feline dementia. If your cat has new or worsening behavior changes, arrange a veterinary assessment before changing food or adding supplements: other medical problems can look like cognitive dysfunction. A suitable diet is complete and balanced, appealing enough for your cat to eat, and compatible with its other health needs.
Can food help a cat with dementia?
Nutrition may be part of supportive care, but current evidence does not identify a best food that reverses dementia or reliably treats it. A 2013 study found better performance on some cognitive tests in cats fed a diet containing a combination of nutrients. It did not test fish oil by itself, establish a cure, or show that a retail food has the same effect. Read the study abstract.
The study’s authors reported: “The cats fed the test diet showed significantly better performance on three of four test protocols: a protocol assessing egocentric learning, a protocol assessing discrimination and reversal learning and a protocol focused on acquisition of a spatial memory task.” The test diet combined fish oil, B vitamins, antioxidants, and arginine. Because several nutrients were given together, the result cannot show which ingredient—if any—accounted for the difference. Cognitive-test performance is also not proof that a diet treats diagnosed dementia.
Veterinary guidance discusses nutrients such as EPA and DHA as possible parts of a nutrition plan, but that is not evidence that a particular food or supplement treats feline cognitive dysfunction. Guidance on antioxidants, medium-chain triglycerides, and other nutritional approaches likewise does not establish one universally effective dementia diet. The 2025 systematic review considers nutritional evidence across dogs and cats; findings from dogs should not be treated as proof of benefit in cats.
#1 Best Overall
- Veterinarians Recommend IAMS: Feed your favorite feline IAMS Proactive Health dry kitten food to support their whole-body health
- Discover the Proactive 5 Difference: The Proactive 5 health benefits for IAMS Proactive Health are scientifically designed to support five key areas of your kitten’s health, keeping them full of life, for more of life
- #1 Ingredient is Real Chicken: This nutrient-rich kitten food is made with real chicken, contains high-quality protein sources, and supports a growing body that loves to play
- Brain & Vision Development: IAMS Proactive Health Healthy Kitten contains Omega-3 DHA and taurine to help support your kitten’s healthy brain & vision development
- Supports a Healthy Immune System: This dry kitten food is enriched with Vitamin E to develop a strong immune system
Why behavior changes need a veterinary check
Disorientation, changes in sleep or interaction, and other cognitive-like signs can have causes besides cognitive dysfunction. The AAFP senior-care guideline notes that systemic illness and organic brain disease, as well as cognitive dysfunction, may explain cognitive changes. In practice, the veterinarian needs to assess possible causes rather than diagnose dementia from one behavior alone. The AAFP guideline and a 2021 veterinary review place diagnosis and ruling out other causes before management choices.
Describe what has changed, when it began, and how often it happens. Mention changes in eating, drinking, elimination, mobility, sleep, or medication as well as behavior; these details can help the veterinarian decide what to assess. Do not delay an appointment while trying a new food or supplement.
Rank #2
- Purina ONE +Plus Urinary Tract Health cat food made with real chicken to help provide the protein she needs for strong muscles, including a healthy heart
- Urinary care cat food provides low magnesium and supports urinary tract health by reducing urinary pH
- Easily digestible SmartBlend of high-quality ingredients in Purina ONE urinary tract cat food includes four antioxidant sources for a strong immune system
- Deliciously crunchy cat food bites deliver great taste with no artificial flavors or colors
- Urinary health cat food crafted in Purina-owned, U.S. facilities
What to feed an older cat with cognitive changes
Start with a complete and balanced food that fits your cat’s life stage and medical needs, and that the cat will reliably eat. “Senior” on a label alone does not make a food suitable for a cat with a particular disease, and a cognitive-change diagnosis does not automatically call for a specialized brain-health diet.
Compare options with your veterinarian using these practical criteria:
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Rank #3
- Veterinarians Recommend IAMS: Feed your favorite feline IAMS Proactive Health dry kitten food to support their whole-body health
- Discover the Proactive 5 Difference: The Proactive 5 health benefits for IAMS Proactive Health are scientifically designed to support five key areas of your kitten’s health, keeping them full of life, for more of life
- #1 Ingredient is Real Chicken: This nutrient-rich kitten food is made with real chicken, contains high-quality protein sources, and supports a growing body that loves to play
- Brain & Vision Development: IAMS Proactive Health Healthy Kitten contains Omega-3 DHA and taurine to help support your kitten’s healthy brain & vision development
- Supports a Healthy Immune System: This dry kitten food is enriched with Vitamin E to develop a strong immune system
- Medical fit: Make sure the food is compatible with diagnosed conditions and any prescribed therapeutic diet.
- Reliable intake: Choose a food your cat finds palatable and can eat comfortably. A theoretical nutrient advantage is of little practical use if the cat refuses the food or eats too little.
- Nutrition plan: Ask whether the cat’s current food provides appropriate EPA and DHA, or whether a different source is suitable.
- Format: Wet, dry, or mixed feeding can be considered in light of hydration, dental comfort, appetite, and what works in your household.
- Practical transition: Plan changes with the veterinarian, especially if your cat has a health condition, eats a prescribed diet, or has a poor appetite.
These criteria help select a diet for the individual cat; they do not rank foods by ability to treat dementia.
EPA, DHA, and fish oil: what to ask your vet
EPA and DHA are omega-3 fatty acids that may be supplied in a complete diet or, when appropriate, through a supplement. VCA identifies fish oil and marine algae oil as possible sources and discusses these nutrients in supportive nutrition for cats with cognitive dysfunction. That guidance does not establish that supplementation reverses cognitive changes. See VCA’s nutrition guidance.
Rank #4
- FOR SENIOR CATS OVER 11 YEARS: Royal Canin Aging 11+ senior dry cat food is formulated to meet the specific nutritional needs of older cats
- PRECISELY BALANCED BLEND: Royal Canin’s HealthyAge7 Complex helps maintain your cat's health and vitality as they enter their senior years
- SUPPORTS APPETITE AND WEIGHT: A highly palatable and energy-rich formula helps support a healthy appetite and body weight
- HEALTHY SKIN AND COAT: Contains linoleic acid and zinc to help maintain skin and coat health
- COGNITIVE FUNCTION AND VISION: Tryptophan, EPA and DHA, taurine, and vitamin A support cognitive function and vision
Ask the veterinarian whether an added source is appropriate alongside your cat’s existing food, health conditions, and medications. Do not choose a dose based on general advice: the right amount and suitability depend on the individual cat. VCA also cautions that oils can lose potency or become rancid, so freshness and storage matter if your veterinarian recommends one.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Food is only one part of supportive care
A veterinarian may discuss environmental changes alongside nutrition. VCA describes regular meals and interactive feeding as engagement options. A 2021 review also includes environmental enrichment among possible management approaches, alongside dietary measures and, where appropriate, medication. These options are part of individualized care, not substitutes for assessing the cause of behavior changes.
Best Value
- High protein kitten food made with real chicken as the number 1 ingredient helps support her strong, growing muscles
- DHA, a nutrient found in mother’s milk helps support her vision and brain development, and four antioxidant sources support a strong immune system
- Easily digestible, SmartBlend of high-quality ingredients comes together for a chicken cat food for kittens that supplies 100 percent complete and balanced nutrition to help her thrive
- Great tasting, deliciously crunchy bites of kitten cat food kibble plus added calcium support her strong teeth and healthy gums while giving her a texture she loves
- Feline natural cat food with added vitamins, minerals and nutrients is crafted by a veterinarian-recommended brand in Purina-owned, U.S. facilities with no artificial flavors or preservatives
For practical discussion, note whether your cat can reach food, water, litter, and resting places easily, and whether predictable routines or feeding activities suit its mobility and temperament. The Cornell Feline Health Center’s overview covers cognitive dysfunction and senior-cat considerations. The AAHA senior-care nutrition guidance also frames nutrition as part of broader, individualized disease management.
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